Search Results (3)

Background: The present study aims to investigate the superiority of TARE-Y90 in the treatment of liver metastases from colorectal cancer in comparison to DEBIRI and perform a parallel resource consumption study to demonstrate a possible favorable cost-effectiveness balance. Methods: The number of subjects included in this study was 46 for TARE-Y90 and 56 in the DEBIRI group. The variables of interest in this study were collected for all selected subjects. Time-to-endpoint outcomes (overall survival, time to progression and time to extra-hepatic progression) were calculated by Kaplan–Meier analysis, reported as medians with 95% confidence intervals and compared between groups by log-rank testing. Values for median time-to-event and 95% confidence intervals were calculated using bootstrapping. Results: Categorization into overall response (OR) and no overall response (NOR) revealed a higher percentage of overall responses in the DEBIRI group (52%) compared to TARE-Y90 (24%). The numerical differences observed in certain response categories did not reach statistical significance, indicating a comparable overall response to treatment between the two cohorts based on the m-RECIST criteria. Median overall survival for the TARE-Y90 cohort was 11.3 (95% CI 10.9–18.6) months and 15.8 (95% CI 14.8–22.7) months for the DEBIRI cohort. Log-rank testing showed no statistically significant differences (p = 0.53). Median time to hepatic disease progression for the TARE-Y90 cohort was 3.5 (95% CI 3.4–8.1) months and 3.8 (95% CI 3.7–11.1) months for the DEBIRI cohort. Log-rank testing showed no statistically significant differences (p = 0.82). An important result of the resource utilization analysis is that TARE-Y90 patients had 1.33 treatments on average per patient, while DEBIRI patients had 3.16 treatments per patient. TARE-Y90 patients also needed fewer days of hospitalization than those in the DEBIRI group. The consequence is that the overall use of resources was higher for DEBIRI in comparison to TARE-Y90. Conclusions: Our analysis of the TARE-Y90 and DEBIRI treatments for CRC liver metastases contributes valuable insights into their comparative effectiveness, revealing no significant differences in radiological responses and overall survival. TARE-Y90 showed higher resource utilization, and its potential advantages in patient comfort and average resource consumption per patient warrant consideration. Full article

Background: The simultaneous presence of colorectal liver metastases (CRLMs) and extrahepatic metastases in patients with colorectal cancer (CRC) can be considered a relative contraindication for local treatment with curative intent. This study aims to assess the survival outcomes of patients with CRLMs and extrahepatic metastases after comprehensive local treatment of all metastatic sites. Methods: Patients with CRLMs who received local treatment of all metastatic sites were extracted from the prospective AmCORE registry database and subdivided into two groups: CRLM only vs. CRLM and extrahepatic metastasis. To address potential confounders, multivariate analysis was performed. The primary endpoint was overall survival (OS). Results: In total, 881 patients with CRLM only and 60 with CRLM and extrahepatic disease were included, and the median OS was 55.7 months vs. 42.7 months, respectively. Though OS was significantly lower in patients with concomitant extrahepatic metastases (HR 1.477; 95% CI 1.029–2.121; p = 0.033), the survival curve plateaued after 6.2 years. Extrahepatic manifestations were pulmonary (43.3%), peritoneal (16.7%) and non-regional lymph node metastases (10.0%). In patients with pulmonary and non-regional lymph node metastases, OS did not significantly differ from patients with CRLM-only disease; concomitant peritoneal metastases showed an inferior OS (HR 1.976; 95% CI 1.017–3.841, p = 0.041). Conclusions: In this comparative series, OS was inferior for patients with multi-organ metastatic CRC versus patients with CRLMs alone. Nonetheless, the long-term survival curve plateau seemed to justify local treatment in a subset of patients with multi-organ metastatic CRC, especially for patients with CRLMs and pulmonary or lymph node metastases. Full article

Colorectal cancer metastasizes predominantly to the liver but also to the lungs and the peritoneum. The presence of extra-hepatic metastases limits curative (surgical) treatment options and is associated with very poor survival. The mechanisms governing multi-organ metastasis formation are incompletely understood. Here, we tested the hypothesis that the site of tumor growth influences extra-hepatic metastasis formation. To this end, we implanted murine colon cancer organoids into the primary tumor site (i.e., the caecum) and into the primary metastasis site (i.e., the liver) in immunocompetent mice. The organoid-initiated liver tumors were significantly more efficient in seeding distant metastases compared to tumors of the same origin growing in the caecum (intra-hepatic: 51 vs. 40%, p = 0.001; peritoneal cavity: 51% vs. 33%, p = 0.001; lungs: 30% vs. 7%, p = 0.017). The enhanced metastatic capacity of the liver tumors was associated with the formation of ‘hotspots’ of vitronectin-positive blood vessels surrounded by macrophages. RNA sequencing analysis of clinical samples showed a high expression of vitronectin in liver metastases, along with signatures reflecting hypoxia, angiogenesis, coagulation, and macrophages. We conclude that ‘onward spread’ from liver metastases is facilitated by liver-specific microenvironmental signals that cause the formation of macrophage-associated vascular hotspots. The therapeutic targeting of these signals may help to contain the disease within the liver and prevent onward spread. Full article